713736021 has 4 divisors (see below), whose sum is σ = 951648032. Its totient is φ = 475824012.

The previous prime is 713736019. The next prime is 713736029. The reversal of 713736021 is 120637317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 713736021 - 2¹ = 713736019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 713736021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (713736029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118956001 + ... + 118956006.

It is an arithmetic number, because the mean of its divisors is an integer number (237912008).

Almost surely, 2^713736021 is an apocalyptic number.

It is an amenable number.

713736021 is a deficient number, since it is larger than the sum of its proper divisors (237912011).

713736021 is a wasteful number, since it uses less digits than its factorization.

713736021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237912010.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 713736021 is about 26715.8383922347. The cubic root of 713736021 is about 893.6741689554.

The spelling of 713736021 in words is "seven hundred thirteen million, seven hundred thirty-six thousand, twenty-one".